package com.tegtech.api.common.controller;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.collections4.map.HashedMap;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import com.tegtech.common.config.TegtechConfig;
import com.tegtech.common.constant.Constants;
import com.tegtech.common.domain.Result;
import com.tegtech.common.utils.file.FileUploadUtils;
import com.tegtech.common.utils.file.FileUtils;
import com.tegtech.core.config.ServerConfig;

import cn.hutool.core.util.StrUtil;
import lombok.extern.slf4j.Slf4j;

/**
 * 通用请求处理
 * 
 * @author Jun
 */
@Slf4j
@RestController
public class CommonController {

	@Autowired
	private ServerConfig serverConfig;

	/**
	 * 通用下载请求
	 * 
	 * @param fileName 文件名称
	 * @param delete   是否删除
	 */
	@GetMapping("common/download")
	public void fileDownload(String fileName, Boolean delete, HttpServletResponse response,
			HttpServletRequest request) {
		try {
			if (!FileUtils.checkAllowDownload(fileName)) {
				throw new Exception(StrUtil.format("文件名称({})非法，不允许下载。 ", fileName));
			}
			String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
			String filePath = TegtechConfig.getDownloadPath() + fileName;

			response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
			FileUtils.setAttachmentResponseHeader(response, realFileName);
			FileUtils.writeBytes(filePath, response.getOutputStream());
			if (delete) {
				FileUtils.deleteFile(filePath);
			}
		} catch (Exception e) {
			log.error("下载文件失败", e);
		}
	}

	/**
	 * 通用上传请求
	 */
	@PostMapping("/common/upload")
	public Result uploadFile(MultipartFile file) throws Exception {
		// 上传文件路径
		String filePath = TegtechConfig.getUploadPath();
		// 上传并返回新文件名称
		String fileName = FileUploadUtils.upload(filePath, file);
		String url = serverConfig.getUrl() + fileName;
		Map<String, Object> data = new HashedMap<String, Object>(2);
		data.put("fileName", fileName);
		data.put("url", url);
		return Result.ok().data(data);
	}

	/**
	 * 本地资源通用下载
	 */
	@GetMapping("/common/download/resource")
	public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		try {
			if (!FileUtils.checkAllowDownload(resource)) {
				throw new Exception(StrUtil.format("资源文件({})非法，不允许下载。 ", resource));
			}
			// 本地资源路径
			String localPath = TegtechConfig.getProfile();
			// 数据库资源地址
			String downloadPath = localPath + StrUtil.subAfter(resource, Constants.RESOURCE_PREFIX, false);
			// 下载名称
			String downloadName = StrUtil.subAfter(downloadPath, "/", true);
			response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
			FileUtils.setAttachmentResponseHeader(response, downloadName);
			FileUtils.writeBytes(downloadPath, response.getOutputStream());
		} catch (Exception e) {
			log.error("下载文件失败", e);
		}
	}
}
